I have been hatching a lot of eggs this year and I have noticed that a lot of them die fully formed as they're hatching. I have 2 hovabators, one hatcher and one with a turner. I have read my hovabator manual several times and I'm doing everything I'm supposed to. I have not washed any of the eggs, so do you think that the bacteria is killing them? Do you wash your eggs? Do you have better hatch rates with washed eggs?